Answer:
What can you keep after giving it to someone?
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
Tear one off and scratch my head, what once was red is black instead!
Blind but cruel.
What kind of nail can be grown?
It's what light turns into in the night
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?